Stanley M. Sapon. Modern Language Aptitude Test – Elementary: Manual, 2002 Edition. Rockville, MD: Language Learning and Testing Foundation, 2002. Pimsleur, Paul, Daniel J. Reed and Charles W. Stansfield. Pimsleur Language Aptitude Battery: Manual, 2004 Edition. Bethesda, MD: Language Learning and Testing Foundation, 2004. Stansfield, Charles W. “Language Aptitude Reconsidered.” ERIC Digest. Washington DC: ERIC Clearinghouse on Languages and Linguistics, 1989. External links Language Aptitude Reconsidered Language Learning and Testing Foundation LDOnline Time needed to learn a language fluently (approx.) Aptitude Educational psychology Language assessment Second-language acquisition